My dad left behind a storage shed. He passed away in 2004. Im 30 and only starting to get into woodworking now. The shed hes built is really poor but its what i have for a woodshop with all the basic tools there. Its poor because the roof was seriously sagging years ago and we had to get that fixed by a friend. Too many crevices that arent flush allowing all sorts of bugs to crawl in and wasps to make small nests, spiders to make cobwebs. The flooring is built with like a thin 3/8 of an inch osb board which is shoddy. it has broken through near the doorway causing a large hole because its not strong enough to support a normal person and also because it has eroded from the weather. The hole had been left unattended. Only until a large rat made its way in the shed with traces of droppings did we get it patched up (poorly though). Also he did not set the shed on top of a large gravel bed which will allow moisture to wick up from the dirt and rot the bottom wood overtime lasting only 10-20 years from what i heard. He only leveled it on some concrete piers. The doorway scrapes on the concrete even though the door is level. And the gap is not flush on the head of the door or the sides. With my new found hobby in woodworking i really am eager to fix my dads mistakes. and right now im trying to figure out how to reinforce the flooring. Im reading books and watching tutorials on it. I really want to do this.